Question

How can I stretch a user control?

I have a userControl it’s highlighted in blue. Is’s a TabControl.

How do I strech it to fill the entire parent.

And how to make ComboBox stretched if GroupBox changes

Update
Please provide the code with this structure:
– Window -> panel -> MyuserContorl
– MyUserControl -> panel -> tabControl

To all stretched

Answer 1

You can anchor your user control by setting the Anchor.

Here’s a useful article

Edit:

In your user control

     this.tabControl.Anchor = ((AnchorStyles)((((AnchorStyles.Top | AnchorStyles.Bottom)
         | AnchorStyles.Left) | AnchorStyles.Right)));

You may also need to Dock or Anchor the panel inside your user control.

In your window

     this.userControl.Anchor = ((AnchorStyles)((((AnchorStyles.Top | AnchorStyles.Bottom)
         | AnchorStyles.Left) | AnchorStyles.Right)));

Again you may need to Dock or Anchor the panel inside your form.